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https://issues.apache.org/jira/browse/SPARK-28086?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16885177#comment-16885177
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Yuming Wang commented on SPARK-28086:
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Could we use {{rand()}}?
> Adds `random()` sql function
> ----------------------------
>
> Key: SPARK-28086
> URL: https://issues.apache.org/jira/browse/SPARK-28086
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Dylan Guedes
> Priority: Major
>
> Currently, Spark does not have a `random()` function. Postgres, however, does.
> For instance, this one is not valid:
> {code:sql}
> SELECT rank() OVER (ORDER BY rank() OVER (ORDER BY random()))
> {code}
> Because of the `random()` call. On the other hand, [Postgres has
> it.|https://www.postgresql.org/docs/8.2/functions-math.html]
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